HH46X HH48X HH49H温州厂家供应 HH49X HDH48X HH46H微阻缓闭蝶形止回阀

H74H/W/X/YH74W对夹单瓣旋启式止回阀

H76H凸耳对夹双瓣旋启式止回阀

H44H/W-16C/P不锈钢H44H旋启式止回阀

HC41X消声止回阀◆ *止回阀

H46H-16C/P/R不锈钢法兰双瓣式止回阀

H76H/W-16c/p/r温州美日德 ◆H76H对夹双瓣旋启式止回阀

H74H/W/X-16C/PH74H对夹单瓣圆片式止回阀

H77H/W/X/Y温州阀门厂直销 H77H对夹蝶式止回阀